From 98611e4e6a2b4a03fd2d4750cce8e4455a995c8d Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@redhat.com>
Date: Thu, 23 Jan 2014 15:55:52 -0800
Subject: exec: kill task_struct->did_exec

We can kill either task->did_exec or PF_FORKNOEXEC, they are mutually
exclusive.  The patch kills ->did_exec because it has a single user.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 kernel/fork.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'kernel/fork.c')

diff --git a/kernel/fork.c b/kernel/fork.c
index b6dd0bbf4240..a17621c6cd42 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1226,7 +1226,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	if (!try_module_get(task_thread_info(p)->exec_domain->module))
 		goto bad_fork_cleanup_count;
 
-	p->did_exec = 0;
 	delayacct_tsk_init(p);	/* Must remain after dup_task_struct() */
 	copy_flags(clone_flags, p);
 	INIT_LIST_HEAD(&p->children);
-- 
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